Meet Your Lungs · Lungs
Filling the chest on either side of the heart, caged by the ribs.
Your lungs fill almost your whole chest — from just above your collarbones down to the bottom of your ribs. The heart sits between them, tucked into a notch carved out of the left lung.
The ribcage forms a protective cage around them and the diaphragm, a dome of muscle, forms the floor. They reach higher than most people expect: the top of each lung sits above the first rib, just behind the collarbone.
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